<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>用户登录</title>
</head>
<body>
<h1>用户登录</h1>
<form action="login" method="post">
    用户名：<input type="text" name="username"><br>
    密  码：<input type="password" name="password"><br>
    <input type="submit" value="登录">
</form>
<% if (request.getAttribute("message") != null) { %>
    <p style="color:red;"><%= request.getAttribute("message") %></p>
<% } %>
</body>
</html>